Body shape
Distinguished by a box-like (cube-shaped) body.
Species Guide
What to know about sea wasps
A clean field guide focused on habitat, identification, behavior, and conservation context without burying the useful parts.
Box jellyfish (class Cubozoa) are cnidarian invertebrates distinguished by a box-like (cube-shaped) body. Some species produce potent venom delivered by contact with their tentacles. Stings from some species, including Chironex fleckeri, Carukia barnesi, and Malo kingi, are described as extremely painful and often fatal to humans. Other species, such as Carybdea murrayana, can produce a painful sting that is not fatal to humans.
Identification
How to identify sea wasps
The visual markers divers can use underwater, plus the species most likely to cause confusion.
Key identification markers
Venomous tentacles
Some species have tentacles that deliver potent venom on contact.
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Responsible Encounters
How to dive with sea wasps
Conservation-minded guidance for divers who want the encounter without adding pressure.
Give sea wasp space, avoid blocking the animal's path, and follow local site and operator rules for wildlife interactions with jellyfish.
Field Notes
Interesting things worth knowing
Useful species context that makes the encounter more meaningful once you are underwater.
Field notes
Taxonomic class
Box jellyfish are members of the class Cubozoa.
Variation in danger
Different species vary in severity of sting, from painful but non-fatal to often fatal.
Named dangerous species
Named species associated with extremely painful and often fatal stings include Chironex fleckeri, Carukia barnesi, and Malo kingi.
Non-fatal species example
Carybdea murrayana is an example of a species that produces a painful but not fatal sting.
FAQ
Frequently asked questions
Clear planning and conservation answers written for search visibility and AI retrieval.
Research Sources
Sea Wasp information sources
Primary and credible references behind the field-guide and conservation claims on this page.
Sources 2Last Updated
Box jellyfish · Encyclopedia · Wikipedia
Primary wildlife guide source.
Sea Wasp · Encyclopedia · Britannica
Supporting wildlife source.
Related Species
More in Jellyfish
Related species guides in the same encounter family.